Derrick



C. E. RAN N EY DERRICK Filed Dec. 24 1925 Patented Aug. 24, 1926..

CLARK n. RANNEY, or TULSA, 0KLAHOMA.

DERRICK.

Application filed December 24, 1925. SerialNo. 77,528.

The invention relates to improvements in derricks primarily intended foruse in the drilling of oil and gas wells.

The invention more specifically relatesto a novel formof supportingbracket for supporting the girths interposed between the legs of thederrick.

It is an object of the invention to provide a derrick that isexceedingly simple in construction, yet possessing the greatest ofstrength to withstand the severe shocks and strains to which a derrickis subjected.

In the accompanying drawings Figure 1 illustrates a portion of thederrick; and,

Figures 2 and 3 are views of the girth supporting devices. 7

Referring now more particularly to the drawings wherein like referencecharacters indicate corresponding parts, the numeral 1 designates thesupporting legs of the derrick. These are constructed of timber," thesections being united in any well known manner to provide a derrick ofthe desired height. The interposed supporting girths for the legs areindicated by the reference character 2. These girths are preferablycomposed of metallic pipe or tubing of say three inches in diameter. Tobrace the legs 1, suitable bracing rods 3 are provided, which bracingrods are secured to the legs 1 in a manner to be later described. Thesebracing rods are preferably metal rods of say seven-eighths of an inchin diameter and are disposed diagonally between adjacent legs.

This invention relates specifically to the means for supporting thegirths 2. As shown in Figures 2 and 8 an angle bracket is providedhaving the two sides 4 and 5 fitting against two sides of therectangular legs 1. It will be understood that the angle brackets usedfor supporting the various girths are all the same and a description ofone will do for all. Each angle bracket is composed of a casting ofmetal, the casting being notched at its upper end at the point where thesides 4 and 5 connect for reasons which will later appear.

It will be observed that each side 4 and 5 of the casting carries anintegral projecting extension 6. This extension is preferably hollow inorder to possess substantial strength while utilizing a minimum amountof material. The outside diameter of each extension is substantiallyless than the inside diameter of each girth 2. As before stated, theseextensions are preferably cast integral with the sides 4; and 5 of thebracket plate but could be otherwise rigidly and immovably securedto'said sides by riveting, weldor otherwise. An angle corner plate 7 isused with each bracket plate. This corner plate constructed from acastiru or stampingof metal engaging and extending beyond two sides ofthe leg of the derrick. The bracket and the corner plate are united by aU-b/Olt 8 which passes around the upper edges of the side plates 1 and 5of the bracket, through the notch formed between these side plates andseats inanotch9formed in the corner of the leg 1 serving to retain theassembly against vertical movement on the leg. Fastening nuts areprovided on the ones of the ei-bolt for drawing the bracket and theangle plate-tightly together. An additional fastening bolt 11 may passthrough the bracket, the derrick leg and the angle plate to retain theseparts on the leg if this is found to be desirable.

It will be observed that the extended ends of the angle plate 7 areprovided with the openings 12. These openings are adapted to r ceive theinturned' ends of the brace rods 3 disposed between the legs of thederrick.

When the girths 2 are mounted on. the tubular extensions 6 it will beunderstood that fastening bolts may be employed, as

indicated by the reference .character 13 which pass through theextension and the girths. In lieu of these bolts other devices may beused to retain the girths on these supporting extensions.

laving thus described my invention, what I claim is:

l. A bracket for securing a tubular girth to a supporting leg,comprising integral angularly disposed side plates, and integral tubularextensions radiating from said bracket, the upper edges of said sideplates being notched at the angle.

2. A bracket for securing a tubular girth to a supporting leg comprisingan angularly disposed plate adapted to fit the leg, means for securingthe plate to a leg, integral tubular extensions extending from the sidesof said angular plate to receive the tubular girths.

In testimony whereof I afiix my signature.

CLARK E. RANNEY.

